To sum up , there are three main ways of tackling the problem...

概括起来说，这一问题主要有三种解决办法…

《牛津词典》

In crude terms , the causes of mental illness seem to be of three main kinds.

简略地说，导致精神病的原因看起来主要有三种。

《牛津词典》

Lack of space in Athens is the main reason why the dead are dug up after three years.

在雅典，尸体埋葬三年后就要被挖出的主要原因是用地不足。

youdao

Ray Romano,John Leguizamo and Dennis Leary return as the voices of the three main animal characters.

VOA: special.2009.06.12

The seaport is one of three main sites in Mogadishu protected by the AMISOM forces.

VOA: standard.2009.09.26

Kunda Dixit,editor of Nepali Times, says the three main parties are refusing to step aside because they want a decisive say in the writing of the new constitution.

VOA: standard.2010.07.29

The site has created virtual versions of the leaders of the three main political parties.

BBC: Web pokes fun at politics

If the Privy Council wanted to make changes to the charter it would not have to get the approval of the leaders of the three main political parties.

BBC: Parties say Tory post-Leveson plan 'basis for talks'

As Scotland has bowed out of two of the three main international education surveys, it is a challenge to offer a clear picture of the current state of play in school education, apart from exam results.

BBC: A year in Scotland's education